<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Service
 * @subpackage Technorati
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: CosmosResultSet.php 18951 2009-11-12 16:26:19Z alexander $
 */


/**
 * @see Zend_Service_Technorati_ResultSet
 */
require_once 'Zend/Service/Technorati/ResultSet.php';


/**
 * Represents a Technorati Cosmos query result set.
 *
 * @category   Zend
 * @package    Zend_Service
 * @subpackage Technorati
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Service_Technorati_CosmosResultSet extends Zend_Service_Technorati_ResultSet
{
	/**
	 * Technorati weblog url, if queried URL is a valid weblog.
	 *
	 * @var     Zend_Uri_Http
	 * @access  protected
	 */
	protected $_url;

	/**
	 * Technorati weblog, if queried URL is a valid weblog.
	 *
	 * @var     Zend_Service_Technorati_Weblog
	 * @access  protected
	 */
	protected $_weblog;

	/**
	 * Number of unique blogs linking this blog
	 *
	 * @var     integer
	 * @access  protected
	 */
	protected $_inboundBlogs;

	/**
	 * Number of incoming links to this blog
	 *
	 * @var     integer
	 * @access  protected
	 */
	protected $_inboundLinks;

	/**
	 * Parses the search response and retrieve the results for iteration.
	 *
	 * @param   DomDocument $dom    the ReST fragment for this object
	 * @param   array $options      query options as associative array
	 */
	public function __construct(DomDocument $dom, $options = array())
	{
		parent::__construct($dom, $options);

		$result = $this->_xpath->query('/tapi/document/result/inboundlinks/text()');
		if ($result->length == 1) $this->_inboundLinks = (int) $result->item(0)->data;

		$result = $this->_xpath->query('/tapi/document/result/inboundblogs/text()');
		if ($result->length == 1) $this->_inboundBlogs = (int) $result->item(0)->data;

		$result = $this->_xpath->query('/tapi/document/result/weblog');
		if ($result->length == 1) {
			/**
			 * @see Zend_Service_Technorati_Weblog
			 */
			require_once 'Zend/Service/Technorati/Weblog.php';
			$this->_weblog = new Zend_Service_Technorati_Weblog($result->item(0));
		}

		$result = $this->_xpath->query('/tapi/document/result/url/text()');
		if ($result->length == 1) {
			try {
				// fetched URL often doens't include schema
				// and this issue causes the following line to fail
				$this->_url = Zend_Service_Technorati_Utils::normalizeUriHttp($result->item(0)->data);
			} catch(Zend_Service_Technorati_Exception $e) {
				if ($this->getWeblog() instanceof Zend_Service_Technorati_Weblog) {
					$this->_url = $this->getWeblog()->getUrl();
				}
			}
		}

		$this->_totalResultsReturned  = (int) $this->_xpath->evaluate("count(/tapi/document/item)");

		// total number of results depends on query type
		// for now check only getInboundLinks() and getInboundBlogs() value
		if ((int) $this->getInboundLinks() > 0) {
			$this->_totalResultsAvailable = $this->getInboundLinks();
		} elseif ((int) $this->getInboundBlogs() > 0) {
			$this->_totalResultsAvailable = $this->getInboundBlogs();
		} else {
			$this->_totalResultsAvailable = 0;
		}
	}


	/**
	 * Returns the weblog URL.
	 *
	 * @return  Zend_Uri_Http
	 */
	public function getUrl() {
		return $this->_url;
	}

	/**
	 * Returns the weblog.
	 *
	 * @return  Zend_Service_Technorati_Weblog
	 */
	public function getWeblog() {
		return $this->_weblog;
	}

	/**
	 * Returns number of unique blogs linking this blog.
	 *
	 * @return  integer the number of inbound blogs
	 */
	public function getInboundBlogs()
	{
		return $this->_inboundBlogs;
	}

	/**
	 * Returns number of incoming links to this blog.
	 *
	 * @return  integer the number of inbound links
	 */
	public function getInboundLinks()
	{
		return $this->_inboundLinks;
	}

	/**
	 * Implements Zend_Service_Technorati_ResultSet::current().
	 *
	 * @return Zend_Service_Technorati_CosmosResult current result
	 */
	public function current()
	{
		/**
		 * @see Zend_Service_Technorati_CosmosResult
		 */
		require_once 'Zend/Service/Technorati/CosmosResult.php';
		return new Zend_Service_Technorati_CosmosResult($this->_results->item($this->_currentIndex));
	}
}
